<title>Low-Pass Filter passlp</title>
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<applet codebase="../afilter" code=AFilter.class archive=afilter.jar width=640 height=450>
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<param name=pause value=20>
<param name=startCircuit value="passlp.txt">
<param name=startLabel   value="Low-Pass Filter passlp">
<param name=useFrame     value="false">
</applet>
<p>
This is a <a
      href="http://hyperphysics.phy-astr.gsu.edu/hbase/electric/filcap.html">high-pass
      filter</a> implemented using a resistor and a capacitor.  A
      high-pass <a href="http://en.wikipedia.org/wiki/Electronic_filter">filter</a> passes
higher frequencies and attenuates lower
      frequencies.  The
      input frequency keeps changing, sweeping up and down the
      spectrum to demonstrate the change in response.
The capacitor passes higher frequencies, causing the output voltage to
      fluctuate more.  Lower frequencies are blocked, and there is
      reduced current across the resistor, keeping the
      output voltage closer to ground.
<p>The breakpoint (-3 <a href="http://en.wikipedia.org/wiki/Decibel">dB</a> point) is
shown at the lower right, as "f.3db".

<p>
Next: <a href="e-filt-lopass.html">Low-Pass Filter (RC)</a><br>
Previous: <a href="e-filt-hipass-af.html">High-Pass Filter (RC)</a><br>
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<br>Generated Sat Sep 19 2009
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